Slag flushing water filter
By introducing a pneumatic backflushing method into the slag flushing water filter to replace the water backflushing method, the problem of high power consumption of the backflushing pump is solved, resulting in power saving and cost reduction, and improving the operational stability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SHOUGANG CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-10
AI Technical Summary
The operation of backwash pumps in the current technology requires a high amount of electrical energy, resulting in high operating costs.
The pneumatic backflushing method is adopted, which connects to the air source through the backflushing main pipe, so that compressed air is sprayed out of the air guide pipe to push the filter residue in the central pipe to the sedimentation tank, replacing the water backflushing method.
It greatly saves electricity, reduces operating costs, and improves the system's operational stability and production efficiency.
Smart Images
Figure CN224100114U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to iron blast furnace water slag flushing technical field especially relates to a kind of slag flushing water filters. BACKGROUND
[0002] The molten slag generated by blast furnace ironmaking flows to the slag flushing nozzle, and the high-pressure slag flushing water sprayed by the nozzle is used to flush, water quenching and granulation. The water slag is then poured into the settling tank through the slag channel. The water slag after settling is discharged, and the remaining slag water mixture flows into the slag flushing water filter through the overflow port of the settling tank. The water slag adsorbed on the filter screen is washed by the spray water and then falls into the middle pipe below the funnel inside the filter.
[0003] The water slag falling into the middle pipe is back-flushed into the slag tank for re-settling and discharge by the back-flushing method of the back-flushing pump continuously spraying water from the tail end of the middle pipe. However, in the back-flushing method of the back-flushing pump, the operation of the back-flushing pump requires high power consumption and high operating cost. SUMMARY
[0004] The present application provides a kind of slag flushing water filter, which improves the technical problems of high energy consumption and high operating cost of the back-flushing method in the related art to some extent.
[0005] The present application provides a kind of slag flushing water filter, which includes:
[0006] The funnel and the middle pipe have a communication port, the middle pipe is arranged below the funnel, and the communication port is in communication with the outlet of the funnel.
[0007] The back-blowing main pipe and the plurality of air guide pipes are arranged in the middle pipe, and the plurality of air guide pipes are distributed in the back-blowing main pipe and in communication with the back-blowing main pipe.
[0008] The back-blowing main pipe is used to connect the air source, so that the plurality of air guide pipes can spray compressed air to push the filter slag in the middle pipe to the settling tank.
[0009] In some embodiments, the middle pipe has an outlet end, and the air outlet of the air guide pipe is directed towards the outlet end, so that the filter slag in the middle pipe is pushed to the settling tank through the outlet end.
[0010] In some embodiments, at least one of the air guide pipes is located at one end of the middle pipe away from the outlet end.
[0011] In some embodiments, the back-blowing device further includes a plug, which is installed at one end of the back-blowing main pipe away from the outlet end.
[0012] In some embodiments, the intermediate pipe is provided with a positioning hole near the outlet end, and the back-flushing main pipe is provided with a positioning pin near the outlet end, the positioning pin being inserted into the positioning hole
[0013] In some embodiments, the back-flushing device further comprises a joint, the joint being installed at one end of the back-flushing main pipe, and the joint being used for connecting a wind source.
[0014] In some embodiments, the back-flushing main pipe has an extension part extending out of the intermediate pipe, and the joint is installed at the extension part.
[0015] In some embodiments, a plurality of the air guide pipes are arranged along the axial direction of the back-flushing main pipe, and the air guide pipes are arranged on both sides of the back-flushing main pipe respectively.
[0016] In some embodiments, the interval between two adjacent air guide pipes is 50cm-100cm.
[0017] In some embodiments, the inner diameter of the air guide pipe is 1 / 4-1 / 3 of the inner diameter of the back-flushing main pipe.
[0018] The application has the following advantages:
[0019] In the filter for slag flushing water provided by the application, the back-flushing main pipe is arranged in the intermediate pipe and is used for connecting a wind source, so that the compressed air is sprayed by the plurality of air guide pipes to push the filter slag in the intermediate pipe to the sedimentation tank, i.e., the air back-flushing is used to replace the water back-flushing method in the related art, and the back-flushing pump is not needed, so that the electric energy is greatly saved, and the operation cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application.
[0021] Figure 1 A structural schematic diagram of the filter for slag flushing water is shown.
[0022] Figure 2 A top view of Figure 1 is shown.
[0023] Figure 3 A structural schematic diagram of the back-flushing device in Figure 1 is shown.
[0024] Explanation of reference signs:
[0025] 10 - slag flushing water filter, 100 - funnel, 200 - middle pipe, 210 - communication port, 220 - outlet end, 300 - back flushing device, 310 - back flushing main pipe, 311 - extension, 320 - air guide pipe, 330 - thread protector, 340 - joint, 350 - positioning pin. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0027] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0028] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.
[0030] The molten slag generated by blast furnace ironmaking flows to the slag flushing nozzle, and the high-pressure slag flushing water sprayed out of the nozzle is flushed, quenched and granulated to become water slag which enters the sedimentation tank through the slag ditch, and the water slag after sedimentation is discharged by the screw slag discharging machine, belt machine and the like.
[0031] The slag-water mixture flows into the slag flushing water filter through the overflow port of the settling tank. The filter filters out the water slag suspended in the slag-water mixture. The water slag is adsorbed on the filter screen as the filter rotates. The filter screen at the top of the filter is cleaned by spraying cleaning water downward to clean the filter screen, and the water slag adsorbed on the filter screen is cleaned to the funnel inside the filter and falls into the middle pipe below the funnel.
[0032] The water slag falling into the middle pipe is back-flushed back to the settling tank for re-deposition and discharge by means of the back-flushing method of the back-flushing pump continuously spraying water from the tail end of the middle pipe. The operation of the back-flushing pump requires high power consumption, and the operation cost is high.
[0033] To solve the above technical problems to some extent, the application provides a slag flushing water filter. The air back-flushing is used instead of the water back-flushing method in the related art, and the back-flushing pump is not used, so that the power consumption is greatly saved, and the operation cost is reduced.
[0034] The embodiments of the application will be described below with reference to the accompanying drawings:
[0035] Please refer to Figures 1-3 The application provides a slag flushing water filter 10, which includes a funnel 100, a middle pipe 200, and an air back-flushing device 300. The middle pipe 200 has a communication port 210. The middle pipe 200 is arranged below the funnel 100, and the communication port 210 is in communication with the outlet of the funnel 100. The air back-flushing device 300 includes an air back-flushing main pipe 310 and a plurality of air guide pipes 320. The air back-flushing main pipe 310 is arranged in the middle pipe 200. The plurality of air guide pipes 320 are distributed at intervals in the air back-flushing main pipe 310 and are in communication with the air back-flushing main pipe 310.
[0036] The air back-flushing main pipe 310 is used to connect a wind source, so that the plurality of air guide pipes 320 spray compressed air to push the filter slag in the middle pipe 200 to the settling tank.
[0037] The middle pipe 200 has two opposite pipe openings. One of the pipe openings is an outlet end 220, and the other pipe opening is a tail end. The communication port 210 is located on the pipe surface of the middle pipe 200, that is, the communication port 210 is located between the outlet end 220 and the tail end. The discharge direction of the funnel 100 is perpendicular to the axis of the middle pipe 200. The communication port 210 is in communication with the outlet of the funnel 100, so that the filter slag entering the funnel 100 falls into the middle pipe 200 through the outlet and the communication port 210 in turn.
[0038] The backwashing main pipe 310 is used for connecting a wind source, and a plurality of air guide pipes 320 are distributed on the backwashing main pipe 310 in an interval and communicate with the backwashing main pipe 310. Therefore, after the backwashing main pipe 310 communicates with the compressed air source on site, the compressed air enters the air guide pipe 320 and is sprayed out of the air guide pipe 320. Since the backwashing main pipe 310 is arranged in the middle pipe 200, the compressed air sprayed out of the air guide pipe 320 can stir and push the spray water and slag falling into the middle pipe 200, so that the slag-water mixture is pushed back to the sedimentation tank, thereby realizing the air backwashing effect.
[0039] It should be noted that steel enterprises are equipped with air compressor stations to produce compressed air for use in various production processes within the enterprise. The production cost of compressed air is low, and there is a large surplus. In the embodiment of the present application, the air backwashing is used instead of the water backwashing method in the related art, and the backwashing pump is not used, thereby greatly saving the electric energy and reducing the operating cost.
[0040] In some embodiments, the middle pipe 200 has an outlet end 220, and the air outlets of the air guide pipes 320 are directed towards the outlet end 220, so that the filtered slag in the middle pipe 200 is pushed to the sedimentation tank through the outlet end 220.
[0041] The filtered slag in the middle pipe 200 enters the sedimentation tank through the outlet end 220, so the air outlets of the air guide pipes 320 are directed towards the outlet end 220, so that the compressed air sprayed out of the air guide pipes 320 blows the filtered slag in the direction of the outlet end 220, thereby making the filtered slag enter the sedimentation tank.
[0042] In some embodiments, at least one air guide pipe 320 is located at an end of the middle pipe 200 away from the outlet end 220.
[0043] The end of the middle pipe 200 away from the outlet end 220 is the tail end. It can be understood that the filtered slag will accumulate at various positions in the middle pipe 200. Since the air outlets of the air guide pipes 320 are all directed towards the outlet end 220, the filtered slag in the middle pipe 200 will be blown in the direction of the outlet end 220, and the tail end is prone to slag accumulation and blockage. Therefore, at least one air guide pipe 320 is located at the end of the middle pipe 200 away from the outlet end 220, so that the compressed air blown out of the air guide pipe 320 can push the filtered slag at the tail end, thereby avoiding the accumulation and blockage of the filtered slag at the tail end and the hardening and scaling of the filtered slag over a long period of time.
[0044] Of course, since at least one air guide pipe 320 needs to be located at the tail end of the middle pipe 200, the backwashing main pipe also needs to be at least flush with the tail end of the middle pipe 200 to install the air guide pipe 320.
[0045] In some embodiments, the backflushing device 300 further comprises a plug 330, which is installed at one end of the backflushing main pipe 310 away from the outlet end 220. That is, the plug 330 is installed at the tail end of the backflushing main pipe 310, and during daily use, the plug 330 can be disassembled to deal with the debris clogging in the backflushing main pipe 310.
[0046] In some embodiments, the through pipe 200 is provided with a positioning hole near the outlet end 220, and the backflushing main pipe 310 is provided with a positioning pin 350 near the outlet end 220, which is inserted into the positioning hole.
[0047] Since the positioning pin 350 is inserted into the positioning hole, the positioning of the backflushing device in the through pipe 200 can be achieved. Of course, the selection principle of the size of the positioning pin 350 and the positioning hole is that the diameter of the positioning pin 350 is smaller than the diameter of the positioning hole, so that the positioning pin 350 can be flexibly inserted and pulled out in the positioning hole, and the installation principle of the positioning hole is not to block the outlet of the through pipe 200, and the length of the positioning pin 350 is determined to play a fixing role and facilitate the insertion and pulling out when disassembling the backflushing main pipe.
[0048] It needs to be explained that the outer diameter of the backflushing main pipe is much smaller than the inner diameter of the through pipe 200, and the positioning pin 350 can be located at the bottom of the backflushing main pipe, and correspondingly, the positioning hole is also located at the bottom of the through pipe 200. Of course, the positioning hole needs to be located outside the funnel 100, and specifically, the positioning hole can be located near the pipe opening of the through pipe 200. Therefore, when the backflushing main pipe is inserted into the through pipe 200, after the positioning pin 350 corresponds to the positioning hole, under the action of gravity of the backflushing main pipe, the positioning pin 350 is directly inserted into the positioning hole.
[0049] In some embodiments, the backflushing device 300 further comprises a connector 340, which is installed at one end of the backflushing main pipe 310, and the connector 340 is used to connect the air source. The connector 340 is used to connect the air source on site through a soft connection pipe, so that compressed air can enter the backflushing main pipe.
[0050] Specifically, in order to facilitate the disassembly of the connector 340, the backflushing main pipe 310 has an extension part 311 extending out of the through pipe 200, and the connector 340 is installed on the extension part 311. That is, the connector 340 is located outside the through pipe 200, so as to facilitate the disassembly of the connector 340. The extension part 311 can extend out of the outlet end 220 of the through pipe 200, and since the backflushing main pipe also needs to be at least flush with the tail end of the through pipe 200, it is obvious that the length of the backflushing main pipe is greater than the length of the through pipe 200.
[0051] In some embodiments, a plurality of air guide pipes 320 are arranged along the axial direction of the backflushing main pipe 310, and the plurality of air guide pipes 320 are arranged on both sides of the backflushing main pipe 310, respectively.
[0052] Since the filter residue can be accumulated in various parts of the middle pipe 200, the plurality of air ducts 320 are arranged along the axial direction of the backwashing main pipe 310, and the plurality of air ducts 320 are arranged on both sides of the backwashing main pipe 310 in the radial direction, so that the filter residue accumulated in various parts of the middle pipe 200 can be blown as much as possible, and the backwashing effect is improved.
[0053] Specifically, the interval between the two adjacent air ducts 320 can be 50cm-100cm, and the inner diameter of the air duct 320 can be 1 / 4-1 / 3 of the inner diameter of the backwashing main pipe 310. Of course, the specific size can be determined according to the actual demand on site and combined with the actual compressed air pressure on site. The backwashing effect can be adjusted by adjusting the number and interval of the air duct 320.
[0054] Next, the overall use method of the filter 10 provided by the embodiment of the application will be introduced:
[0055] 1) When installing the backwashing device 300, two people cooperate to tie the ropes at both ends of the backwashing device 300, one person pulls the rope at each end, one person pulls the rope to move the backwashing device 300 to the outlet end 220 of the middle pipe 200, and then unties the rope tied at the tail end of the backwashing device 300, uses a self-made hook to hook the backwashing device 300 to send it into the middle pipe 200, the other person pulls the rope at the other end to cooperate with the movement of the outlet end 220 of the middle pipe 200, until the backwashing device 300 is inserted into the middle pipe 200 in place, the positioning pin 350 is inserted into the positioning hole, then untie the rope at the front end of the backwashing main pipe, and connect the air source.
[0056] 2) After the backwashing device 300 is installed in place, before starting production, first open the air source, then open the spray water, and then open the filter 10 to start filtering the filter residue water. The residue filtered out by the filter 10 falls into the middle pipe 200, and the spray water and residue in the middle pipe 200 are stirred and pushed by the compressed air sprayed by the backwashing device 300, so that the residue and water mixture is pushed back to the sedimentation tank, realizing the function of the filter 10. When the machine is stopped, first stop filtering the filter residue water, and then stop the filter 10 after the filtered residue is washed clean by the spray water. After the residue in the middle pipe 200 is backwashed clean, turn off the spray water, and finally turn off the air source.
[0057] 3) In the production process, when checking or processing the problems of displacement, blockage, air leakage and the like of the backwashing device 300, the filtering action of the slag flushing water filter 10 needs to be stopped first, the air source is closed, two people cooperate, the backwashing device 300 is disconnected with the air source first, then the backwashing device 300 is sleeved with a rope, one person holds the rope and stands in a safe position at a far end to pull outwards, the other person hooks the tail end of the backwashing device 300 with a hook, and two people cooperate to take out and process the backwashing device 300.
[0058] In the related art, the backwashing pump is unstable in operation due to the need for uninterrupted water operation, and the time-consuming and high maintenance cost are required for processing faults or replacing spare parts, which directly affects the normal operation of the filter and even affects the normal production of the entire slag flushing system, while in the present application, the installation of the backwashing device is relatively simple, the failure rate is low, the time-consuming for processing faults or replacing the backwashing device 300 is short, thereby the operation stability of the entire slag flushing system can be improved.
[0059] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.
[0060] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.
Claims
1. A filter for filtering out slag water, characterized by comprising: The utility model relates to a filter device, comprising: a funnel and a central pipe, the central pipe is arranged below the funnel, and the communication port of the central pipe communicates with the outlet of the funnel; a backwashing device, comprising a backwashing main pipe and a plurality of air guide pipes, the backwashing main pipe is arranged in the central pipe, and a plurality of air guide pipes are distributed at intervals in the backwashing main pipe and communicate with the backwashing main pipe; wherein the backwashing main pipe is used for connecting a wind source, so that a plurality of air guide pipes spray compressed air to push filter residue in the central pipe to a sedimentation tank.
2. The filter according to claim 1, wherein The central pipe has an outlet end, and the air outlet of the air guide pipe is directed to the outlet end, so that the filter residue in the central pipe is pushed to the sedimentation tank through the outlet end.
3. The filter according to claim 2, wherein At least one air guide pipe is located at one end of the central pipe away from the outlet end.
4. The filter according to claim 2, wherein The backwashing device further comprises a plug, which is installed at one end of the backwashing main pipe away from the outlet end.
5. The filter according to claim 2, wherein The central pipe is provided with a positioning hole near the outlet end, and the backwashing main pipe is provided with a positioning pin near the outlet end, which is inserted into the positioning hole.
6. A filter according to any one of claims 1-5, c h a r a c t e r i s e d in that The backwashing device further comprises a joint, which is installed at one end of the backwashing main pipe, and the joint is used for connecting a wind source.
7. The filter according to claim 6, wherein The backwashing main pipe has an extension part extending out of the central pipe, and the joint is installed on the extension part.
8. A filter according to any one of claims 1-5, c h a r a c t e r i s e d in that A plurality of air guide pipes are arranged at intervals along the axial direction of the backwashing main pipe, and a plurality of air guide pipes are arranged on both sides of the backwashing main pipe respectively.
9. The filter according to claim 8, wherein The interval between two adjacent air guide pipes is 50cm-100cm.
10. The filter according to any one of claims 1-5, wherein The inner diameter of the air guide pipe is 1 / 4-1 / 3 of the inner diameter of the backwashing main pipe.